In this recent video from the CSA, Astronaut Chris Hadfield talks about the amount of water consumed on the International Space Station, and how an advanced purification lets astronauts recycle over 90% of the water expelled (even urinated) on board the ISS--over 6,000 liters a year. Hadfield gives a glimpse at the station's water rehydration station, which dispenses a precise volume of water in two temperatures: hot and ambient.